GEAR, SPEED REDUCER USING THE GEAR, AND ELECTRIC POWER STEERING DEVICE WITH THE SPEED REDUCER

Title:

GEAR, SPEED REDUCER USING THE GEAR, AND ELECTRIC POWER STEERING DEVICE WITH THE SPEED REDUCER

Document Type and Number:

WIPO Patent Application WO/2005/005864

Kind Code:

A1

Abstract:

A gear formed of a blended polymer of PA66 and PA6 containing a portion having PA66 molecular structure and a portion having PA6 molecular structure at a weight ratio PA66/PA6 of 99.9/0.1 to 95.0/5.0 or a copolymer and having excellent durability, heat resistance, and dimensional stability. A speed reducer using the gear can be used under high torque and reduced in size without increasing the torque due to the dimensional change of the gear. An electric power steering device in which the speed reducer is assembled can be used for large-sized vehicles and can also be reduced in size.

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Inventors:

KUROKAWA TAKANORI (JP)

Application Number:

PCT/JP2004/009904

Publication Date:

January 20, 2005

Filing Date:

July 06, 2004

Export Citation:

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Assignee:

KOYO SEIKO CO (JP)
KUROKAWA TAKANORI (JP)

International Classes:

B62D5/04; F16H1/16; F16H55/06; (IPC1-7): F16H55/06; B62D5/04; C08G69/02; C08L77/00

Foreign References:

JPS6047063A	1985-03-14
JPS5428359A	1979-03-02
JP2003083423A	2003-03-19
JPH0989081A	1997-03-31
JPS60120022A	1985-06-27
JP2002156025A	2002-05-31
JP2003083423A	2003-03-19

Other References: